bgpd/bgp_vpn.c

   1 /* VPN Related functions
   2  * Copyright (C) 2017 6WIND
   3  *
   4  * This file is part of FRRouting
   5  *
   6  * FRRouting is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * FRRouting is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22 #include "command.h"
  23 #include "prefix.h"
  24 #include "lib/json.h"
  25
  26 #include "bgpd/bgpd.h"
  27 #include "bgpd/bgp_route.h"
  28 #include "bgpd/bgp_table.h"
  29 #include "bgpd/bgp_attr.h"
  30 #include "bgpd/bgp_mplsvpn.h"
  31 #include "bgpd/bgp_vpn.h"
  32
  33 int show_adj_route_vpn(struct vty *vty, struct peer *peer,
  34                        struct prefix_rd *prd, afi_t afi, safi_t safi,
  35                        bool use_json)
  36 {
  37         struct bgp *bgp;
  38         struct bgp_table *table;
  39         struct bgp_node *rn;
  40         struct bgp_node *rm;
  41         struct attr *attr;
  42         int rd_header;
  43         int header = 1;
  44         json_object *json = NULL;
  45         json_object *json_scode = NULL;
  46         json_object *json_ocode = NULL;
  47         json_object *json_routes = NULL;
  48         json_object *json_array = NULL;
  49
  50         bgp = bgp_get_default();
  51         if (bgp == NULL) {
  52                 if (!use_json)
  53                         vty_out(vty, "No BGP process is configured\n");
  54                 else
  55                         vty_out(vty, "{}\n");
  56                 return CMD_WARNING;
  57         }
  58
  59         if (use_json) {
  60                 json_scode = json_object_new_object();
  61                 json_ocode = json_object_new_object();
  62                 json_routes = json_object_new_object();
  63                 json = json_object_new_object();
  64
  65                 json_object_string_add(json_scode, "suppressed", "s");
  66                 json_object_string_add(json_scode, "damped", "d");
  67                 json_object_string_add(json_scode, "history", "h");
  68                 json_object_string_add(json_scode, "valid", "*");
  69                 json_object_string_add(json_scode, "best", ">");
  70                 json_object_string_add(json_scode, "internal", "i");
  71
  72                 json_object_string_add(json_ocode, "igp", "i");
  73                 json_object_string_add(json_ocode, "egp", "e");
  74                 json_object_string_add(json_ocode, "incomplete", "?");
  75         }
  76
  77         for (rn = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); rn;
  78              rn = bgp_route_next(rn)) {
  79                 if (prd && memcmp(rn->p.u.val, prd->val, 8) != 0)
  80                         continue;
  81
  82                 if ((table = rn->info) != NULL) {
  83                         if (use_json)
  84                                 json_array = json_object_new_array();
  85                         else
  86                                 json_array = NULL;
  87
  88                         rd_header = 1;
  89
  90                         for (rm = bgp_table_top(table); rm;
  91                              rm = bgp_route_next(rm)) {
  92                                 if ((attr = rm->info) != NULL) {
  93                                         if (header) {
  94                                                 if (use_json) {
  95                                                         json_object_int_add(
  96                                                                 json,
  97                                                                 "bgpTableVersion",
  98                                                                 0);
  99                                                         json_object_string_add(
 100                                                                 json,
 101                                                                 "bgpLocalRouterId",
 102                                                                 inet_ntoa(
 103                                                                         bgp->router_id));
 104                                                         json_object_object_add(
 105                                                                 json,
 106                                                                 "bgpStatusCodes",
 107                                                                 json_scode);
 108                                                         json_object_object_add(
 109                                                                 json,
 110                                                                 "bgpOriginCodes",
 111                                                                 json_ocode);
 112                                                 } else {
 113                                                         vty_out(vty,
 114                                                                 "BGP table version is 0, local router ID is %s\n",
 115                                                                 inet_ntoa(
 116                                                                         bgp->router_id));
 117                                                         vty_out(vty,
 118                                                                 "Status codes: s suppressed, d damped, h history, * valid, > best, i - internal\n");
 119                                                         vty_out(vty,
 120                                                                 "Origin codes: i - IGP, e - EGP, ? - incomplete\n\n");
 121                                                         vty_out(vty, V4_HEADER);
 122                                                 }
 123                                                 header = 0;
 124                                         }
 125
 126                                         if (rd_header) {
 127                                                 uint16_t type;
 128                                                 struct rd_as rd_as = {0};
 129                                                 struct rd_ip rd_ip = {0};
 130 #if ENABLE_BGP_VNC
 131                                                 struct rd_vnc_eth rd_vnc_eth = {
 132                                                         0};
 133 #endif
 134                                                 uint8_t *pnt;
 135
 136                                                 pnt = rn->p.u.val;
 137
 138                                                 /* Decode RD type. */
 139                                                 type = decode_rd_type(pnt);
 140                                                 /* Decode RD value. */
 141                                                 if (type == RD_TYPE_AS)
 142                                                         decode_rd_as(pnt + 2,
 143                                                                      &rd_as);
 144                                                 else if (type == RD_TYPE_AS4)
 145                                                         decode_rd_as4(pnt + 2,
 146                                                                       &rd_as);
 147                                                 else if (type == RD_TYPE_IP)
 148                                                         decode_rd_ip(pnt + 2,
 149                                                                      &rd_ip);
 150 #if ENABLE_BGP_VNC
 151                                                 else if (type
 152                                                          == RD_TYPE_VNC_ETH)
 153                                                         decode_rd_vnc_eth(
 154                                                                 pnt,
 155                                                                 &rd_vnc_eth);
 156 #endif
 157
 158                                                 if (use_json) {
 159                                                         char buffer[BUFSIZ];
 160                                                         if (type == RD_TYPE_AS
 161                                                             || type == RD_TYPE_AS4)
 162                                                                 sprintf(buffer,
 163                                                                         "%u:%d",
 164                                                                         rd_as.as,
 165                                                                         rd_as.val);
 166                                                         else if (type
 167                                                                  == RD_TYPE_IP)
 168                                                                 sprintf(buffer,
 169                                                                         "%s:%d",
 170                                                                         inet_ntoa(
 171                                                                                 rd_ip.ip),
 172                                                                         rd_ip.val);
 173                                                         json_object_string_add(
 174                                                                 json_routes,
 175                                                                 "routeDistinguisher",
 176                                                                 buffer);
 177                                                 } else {
 178                                                         vty_out(vty,
 179                                                                 "Route Distinguisher: ");
 180
 181                                                         if (type == RD_TYPE_AS
 182                                                             || type == RD_TYPE_AS4)
 183                                                                 vty_out(vty,
 184                                                                         "%u:%d",
 185                                                                         rd_as.as,
 186                                                                         rd_as.val);
 187                                                         else if (type
 188                                                                  == RD_TYPE_IP)
 189                                                                 vty_out(vty,
 190                                                                         "%s:%d",
 191                                                                         inet_ntoa(
 192                                                                                 rd_ip.ip),
 193                                                                         rd_ip.val);
 194 #if ENABLE_BGP_VNC
 195                                                         else if (
 196                                                                 type
 197                                                                 == RD_TYPE_VNC_ETH)
 198                                                                 vty_out(vty,
 199                                                                         "%u:%02x:%02x:%02x:%02x:%02x:%02x",
 200                                                                         rd_vnc_eth
 201                                                                                 .local_nve_id,
 202                                                                         rd_vnc_eth
 203                                                                                 .macaddr
 204                                                                                 .octet[0],
 205                                                                         rd_vnc_eth
 206                                                                                 .macaddr
 207                                                                                 .octet[1],
 208                                                                         rd_vnc_eth
 209                                                                                 .macaddr
 210                                                                                 .octet[2],
 211                                                                         rd_vnc_eth
 212                                                                                 .macaddr
 213                                                                                 .octet[3],
 214                                                                         rd_vnc_eth
 215                                                                                 .macaddr
 216                                                                                 .octet[4],
 217                                                                         rd_vnc_eth
 218                                                                                 .macaddr
 219                                                                                 .octet[5]);
 220 #endif
 221
 222                                                         vty_out(vty, "\n");
 223                                                 }
 224                                                 rd_header = 0;
 225                                         }
 226                                         if (use_json) {
 227                                                 char buf_a[BUFSIZ];
 228                                                 char buf_b[BUFSIZ];
 229
 230                                                 sprintf(buf_a, "%s/%d",
 231                                                         inet_ntop(rm->p.family,
 232                                                                   rm->p.u.val,
 233                                                                   buf_b,
 234                                                                   BUFSIZ),
 235                                                         rm->p.prefixlen);
 236                                                 json_object_object_add(
 237                                                         json_routes, buf_a,
 238                                                         json_array);
 239                                         } else {
 240                                                 route_vty_out_tmp(
 241                                                         vty, &rm->p, attr,
 242                                                         SAFI_MPLS_VPN, use_json,
 243                                                         json_array);
 244                                         }
 245                                 }
 246                         }
 247                 }
 248         }
 249         if (use_json) {
 250                 json_object_object_add(json, "routes", json_routes);
 251                 vty_out(vty, "%s\n", json_object_to_json_string_ext(
 252                                              json, JSON_C_TO_STRING_PRETTY));
 253                 json_object_free(json);
 254         }
 255         return CMD_SUCCESS;
 256 }